10ba002bcSHans de Goede /* SPDX-License-Identifier: GPL-2.0 */ 20ba002bcSHans de Goede /* 30ba002bcSHans de Goede * vboxguest linux pci driver, char-dev and input-device code, 40ba002bcSHans de Goede * 50ba002bcSHans de Goede * Copyright (C) 2006-2016 Oracle Corporation 60ba002bcSHans de Goede */ 70ba002bcSHans de Goede 80532a1b0SHans de Goede #include <linux/cred.h> 90ba002bcSHans de Goede #include <linux/input.h> 100ba002bcSHans de Goede #include <linux/kernel.h> 110ba002bcSHans de Goede #include <linux/miscdevice.h> 120ba002bcSHans de Goede #include <linux/module.h> 130ba002bcSHans de Goede #include <linux/pci.h> 140ba002bcSHans de Goede #include <linux/poll.h> 150ba002bcSHans de Goede #include <linux/vbox_utils.h> 160ba002bcSHans de Goede #include "vboxguest_core.h" 170ba002bcSHans de Goede 180ba002bcSHans de Goede /** The device name. */ 190ba002bcSHans de Goede #define DEVICE_NAME "vboxguest" 200ba002bcSHans de Goede /** The device name for the device node open to everyone. */ 210ba002bcSHans de Goede #define DEVICE_NAME_USER "vboxuser" 220ba002bcSHans de Goede /** VirtualBox PCI vendor ID. */ 230ba002bcSHans de Goede #define VBOX_VENDORID 0x80ee 240ba002bcSHans de Goede /** VMMDev PCI card product ID. */ 250ba002bcSHans de Goede #define VMMDEV_DEVICEID 0xcafe 260ba002bcSHans de Goede 270ba002bcSHans de Goede /** Mutex protecting the global vbg_gdev pointer used by vbg_get/put_gdev. */ 280ba002bcSHans de Goede static DEFINE_MUTEX(vbg_gdev_mutex); 290ba002bcSHans de Goede /** Global vbg_gdev pointer used by vbg_get/put_gdev. */ 300ba002bcSHans de Goede static struct vbg_dev *vbg_gdev; 310ba002bcSHans de Goede 320532a1b0SHans de Goede static u32 vbg_misc_device_requestor(struct inode *inode) 330532a1b0SHans de Goede { 340532a1b0SHans de Goede u32 requestor = VMMDEV_REQUESTOR_USERMODE | 350532a1b0SHans de Goede VMMDEV_REQUESTOR_CON_DONT_KNOW | 360532a1b0SHans de Goede VMMDEV_REQUESTOR_TRUST_NOT_GIVEN; 370532a1b0SHans de Goede 38da0d6b3aSDenis Efremov if (from_kuid(current_user_ns(), current_uid()) == 0) 390532a1b0SHans de Goede requestor |= VMMDEV_REQUESTOR_USR_ROOT; 400532a1b0SHans de Goede else 410532a1b0SHans de Goede requestor |= VMMDEV_REQUESTOR_USR_USER; 420532a1b0SHans de Goede 430532a1b0SHans de Goede if (in_egroup_p(inode->i_gid)) 440532a1b0SHans de Goede requestor |= VMMDEV_REQUESTOR_GRP_VBOX; 450532a1b0SHans de Goede 460532a1b0SHans de Goede return requestor; 470532a1b0SHans de Goede } 480532a1b0SHans de Goede 490ba002bcSHans de Goede static int vbg_misc_device_open(struct inode *inode, struct file *filp) 500ba002bcSHans de Goede { 510ba002bcSHans de Goede struct vbg_session *session; 520ba002bcSHans de Goede struct vbg_dev *gdev; 530ba002bcSHans de Goede 540ba002bcSHans de Goede /* misc_open sets filp->private_data to our misc device */ 550ba002bcSHans de Goede gdev = container_of(filp->private_data, struct vbg_dev, misc_device); 560ba002bcSHans de Goede 570532a1b0SHans de Goede session = vbg_core_open_session(gdev, vbg_misc_device_requestor(inode)); 580ba002bcSHans de Goede if (IS_ERR(session)) 590ba002bcSHans de Goede return PTR_ERR(session); 600ba002bcSHans de Goede 610ba002bcSHans de Goede filp->private_data = session; 620ba002bcSHans de Goede return 0; 630ba002bcSHans de Goede } 640ba002bcSHans de Goede 650ba002bcSHans de Goede static int vbg_misc_device_user_open(struct inode *inode, struct file *filp) 660ba002bcSHans de Goede { 670ba002bcSHans de Goede struct vbg_session *session; 680ba002bcSHans de Goede struct vbg_dev *gdev; 690ba002bcSHans de Goede 700ba002bcSHans de Goede /* misc_open sets filp->private_data to our misc device */ 710ba002bcSHans de Goede gdev = container_of(filp->private_data, struct vbg_dev, 720ba002bcSHans de Goede misc_device_user); 730ba002bcSHans de Goede 740532a1b0SHans de Goede session = vbg_core_open_session(gdev, vbg_misc_device_requestor(inode) | 750532a1b0SHans de Goede VMMDEV_REQUESTOR_USER_DEVICE); 760ba002bcSHans de Goede if (IS_ERR(session)) 770ba002bcSHans de Goede return PTR_ERR(session); 780ba002bcSHans de Goede 790ba002bcSHans de Goede filp->private_data = session; 800ba002bcSHans de Goede return 0; 810ba002bcSHans de Goede } 820ba002bcSHans de Goede 830ba002bcSHans de Goede /** 840ba002bcSHans de Goede * Close device. 850ba002bcSHans de Goede * Return: 0 on success, negated errno on failure. 860ba002bcSHans de Goede * @inode: Pointer to inode info structure. 870ba002bcSHans de Goede * @filp: Associated file pointer. 880ba002bcSHans de Goede */ 890ba002bcSHans de Goede static int vbg_misc_device_close(struct inode *inode, struct file *filp) 900ba002bcSHans de Goede { 910ba002bcSHans de Goede vbg_core_close_session(filp->private_data); 920ba002bcSHans de Goede filp->private_data = NULL; 930ba002bcSHans de Goede return 0; 940ba002bcSHans de Goede } 950ba002bcSHans de Goede 960ba002bcSHans de Goede /** 970ba002bcSHans de Goede * Device I/O Control entry point. 980ba002bcSHans de Goede * Return: 0 on success, negated errno on failure. 990ba002bcSHans de Goede * @filp: Associated file pointer. 1000ba002bcSHans de Goede * @req: The request specified to ioctl(). 1010ba002bcSHans de Goede * @arg: The argument specified to ioctl(). 1020ba002bcSHans de Goede */ 1030ba002bcSHans de Goede static long vbg_misc_device_ioctl(struct file *filp, unsigned int req, 1040ba002bcSHans de Goede unsigned long arg) 1050ba002bcSHans de Goede { 1060ba002bcSHans de Goede struct vbg_session *session = filp->private_data; 1070ba002bcSHans de Goede size_t returned_size, size; 1080ba002bcSHans de Goede struct vbg_ioctl_hdr hdr; 109faf6a2a4SHans de Goede bool is_vmmdev_req; 1100ba002bcSHans de Goede int ret = 0; 1110ba002bcSHans de Goede void *buf; 1120ba002bcSHans de Goede 1130ba002bcSHans de Goede if (copy_from_user(&hdr, (void *)arg, sizeof(hdr))) 1140ba002bcSHans de Goede return -EFAULT; 1150ba002bcSHans de Goede 1160ba002bcSHans de Goede if (hdr.version != VBG_IOCTL_HDR_VERSION) 1170ba002bcSHans de Goede return -EINVAL; 1180ba002bcSHans de Goede 1190ba002bcSHans de Goede if (hdr.size_in < sizeof(hdr) || 1200ba002bcSHans de Goede (hdr.size_out && hdr.size_out < sizeof(hdr))) 1210ba002bcSHans de Goede return -EINVAL; 1220ba002bcSHans de Goede 1230ba002bcSHans de Goede size = max(hdr.size_in, hdr.size_out); 1240ba002bcSHans de Goede if (_IOC_SIZE(req) && _IOC_SIZE(req) != size) 1250ba002bcSHans de Goede return -EINVAL; 1260ba002bcSHans de Goede if (size > SZ_16M) 1270ba002bcSHans de Goede return -E2BIG; 1280ba002bcSHans de Goede 129faf6a2a4SHans de Goede /* 130faf6a2a4SHans de Goede * IOCTL_VMMDEV_REQUEST needs the buffer to be below 4G to avoid 131faf6a2a4SHans de Goede * the need for a bounce-buffer and another copy later on. 132faf6a2a4SHans de Goede */ 133faf6a2a4SHans de Goede is_vmmdev_req = (req & ~IOCSIZE_MASK) == VBG_IOCTL_VMMDEV_REQUEST(0) || 134f794db68SHans de Goede req == VBG_IOCTL_VMMDEV_REQUEST_BIG || 135f794db68SHans de Goede req == VBG_IOCTL_VMMDEV_REQUEST_BIG_ALT; 136faf6a2a4SHans de Goede 137faf6a2a4SHans de Goede if (is_vmmdev_req) 1380532a1b0SHans de Goede buf = vbg_req_alloc(size, VBG_IOCTL_HDR_TYPE_DEFAULT, 1390532a1b0SHans de Goede session->requestor); 140faf6a2a4SHans de Goede else 141faf6a2a4SHans de Goede buf = kmalloc(size, GFP_KERNEL); 1420ba002bcSHans de Goede if (!buf) 1430ba002bcSHans de Goede return -ENOMEM; 1440ba002bcSHans de Goede 145bd23a726SWenwen Wang *((struct vbg_ioctl_hdr *)buf) = hdr; 146bd23a726SWenwen Wang if (copy_from_user(buf + sizeof(hdr), (void *)arg + sizeof(hdr), 147bd23a726SWenwen Wang hdr.size_in - sizeof(hdr))) { 1480ba002bcSHans de Goede ret = -EFAULT; 1490ba002bcSHans de Goede goto out; 1500ba002bcSHans de Goede } 1510ba002bcSHans de Goede if (hdr.size_in < size) 1520ba002bcSHans de Goede memset(buf + hdr.size_in, 0, size - hdr.size_in); 1530ba002bcSHans de Goede 1540ba002bcSHans de Goede ret = vbg_core_ioctl(session, req, buf); 1550ba002bcSHans de Goede if (ret) 1560ba002bcSHans de Goede goto out; 1570ba002bcSHans de Goede 1580ba002bcSHans de Goede returned_size = ((struct vbg_ioctl_hdr *)buf)->size_out; 1590ba002bcSHans de Goede if (returned_size > size) { 1600ba002bcSHans de Goede vbg_debug("%s: too much output data %zu > %zu\n", 1610ba002bcSHans de Goede __func__, returned_size, size); 1620ba002bcSHans de Goede returned_size = size; 1630ba002bcSHans de Goede } 1640ba002bcSHans de Goede if (copy_to_user((void *)arg, buf, returned_size) != 0) 1650ba002bcSHans de Goede ret = -EFAULT; 1660ba002bcSHans de Goede 1670ba002bcSHans de Goede out: 168faf6a2a4SHans de Goede if (is_vmmdev_req) 169faf6a2a4SHans de Goede vbg_req_free(buf, size); 170faf6a2a4SHans de Goede else 1710ba002bcSHans de Goede kfree(buf); 1720ba002bcSHans de Goede 1730ba002bcSHans de Goede return ret; 1740ba002bcSHans de Goede } 1750ba002bcSHans de Goede 1760ba002bcSHans de Goede /** The file_operations structures. */ 1770ba002bcSHans de Goede static const struct file_operations vbg_misc_device_fops = { 1780ba002bcSHans de Goede .owner = THIS_MODULE, 1790ba002bcSHans de Goede .open = vbg_misc_device_open, 1800ba002bcSHans de Goede .release = vbg_misc_device_close, 1810ba002bcSHans de Goede .unlocked_ioctl = vbg_misc_device_ioctl, 1820ba002bcSHans de Goede #ifdef CONFIG_COMPAT 1830ba002bcSHans de Goede .compat_ioctl = vbg_misc_device_ioctl, 1840ba002bcSHans de Goede #endif 1850ba002bcSHans de Goede }; 1860ba002bcSHans de Goede static const struct file_operations vbg_misc_device_user_fops = { 1870ba002bcSHans de Goede .owner = THIS_MODULE, 1880ba002bcSHans de Goede .open = vbg_misc_device_user_open, 1890ba002bcSHans de Goede .release = vbg_misc_device_close, 1900ba002bcSHans de Goede .unlocked_ioctl = vbg_misc_device_ioctl, 1910ba002bcSHans de Goede #ifdef CONFIG_COMPAT 1920ba002bcSHans de Goede .compat_ioctl = vbg_misc_device_ioctl, 1930ba002bcSHans de Goede #endif 1940ba002bcSHans de Goede }; 1950ba002bcSHans de Goede 1960ba002bcSHans de Goede /** 1970ba002bcSHans de Goede * Called when the input device is first opened. 1980ba002bcSHans de Goede * 1990ba002bcSHans de Goede * Sets up absolute mouse reporting. 2000ba002bcSHans de Goede */ 2010ba002bcSHans de Goede static int vbg_input_open(struct input_dev *input) 2020ba002bcSHans de Goede { 2030ba002bcSHans de Goede struct vbg_dev *gdev = input_get_drvdata(input); 2040ba002bcSHans de Goede u32 feat = VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE | VMMDEV_MOUSE_NEW_PROTOCOL; 2050ba002bcSHans de Goede 20603c95e59SQinglang Miao return vbg_core_set_mouse_status(gdev, feat); 2070ba002bcSHans de Goede } 2080ba002bcSHans de Goede 2090ba002bcSHans de Goede /** 2100ba002bcSHans de Goede * Called if all open handles to the input device are closed. 2110ba002bcSHans de Goede * 2120ba002bcSHans de Goede * Disables absolute reporting. 2130ba002bcSHans de Goede */ 2140ba002bcSHans de Goede static void vbg_input_close(struct input_dev *input) 2150ba002bcSHans de Goede { 2160ba002bcSHans de Goede struct vbg_dev *gdev = input_get_drvdata(input); 2170ba002bcSHans de Goede 2180ba002bcSHans de Goede vbg_core_set_mouse_status(gdev, 0); 2190ba002bcSHans de Goede } 2200ba002bcSHans de Goede 2210ba002bcSHans de Goede /** 2220ba002bcSHans de Goede * Creates the kernel input device. 2230ba002bcSHans de Goede * 2240ba002bcSHans de Goede * Return: 0 on success, negated errno on failure. 2250ba002bcSHans de Goede */ 2260ba002bcSHans de Goede static int vbg_create_input_device(struct vbg_dev *gdev) 2270ba002bcSHans de Goede { 2280ba002bcSHans de Goede struct input_dev *input; 2290ba002bcSHans de Goede 2300ba002bcSHans de Goede input = devm_input_allocate_device(gdev->dev); 2310ba002bcSHans de Goede if (!input) 2320ba002bcSHans de Goede return -ENOMEM; 2330ba002bcSHans de Goede 2340ba002bcSHans de Goede input->id.bustype = BUS_PCI; 2350ba002bcSHans de Goede input->id.vendor = VBOX_VENDORID; 2360ba002bcSHans de Goede input->id.product = VMMDEV_DEVICEID; 2370ba002bcSHans de Goede input->open = vbg_input_open; 2380ba002bcSHans de Goede input->close = vbg_input_close; 2390ba002bcSHans de Goede input->dev.parent = gdev->dev; 2400ba002bcSHans de Goede input->name = "VirtualBox mouse integration"; 2410ba002bcSHans de Goede 2420ba002bcSHans de Goede input_set_abs_params(input, ABS_X, VMMDEV_MOUSE_RANGE_MIN, 2430ba002bcSHans de Goede VMMDEV_MOUSE_RANGE_MAX, 0, 0); 2440ba002bcSHans de Goede input_set_abs_params(input, ABS_Y, VMMDEV_MOUSE_RANGE_MIN, 2450ba002bcSHans de Goede VMMDEV_MOUSE_RANGE_MAX, 0, 0); 2460ba002bcSHans de Goede input_set_capability(input, EV_KEY, BTN_MOUSE); 2470ba002bcSHans de Goede input_set_drvdata(input, gdev); 2480ba002bcSHans de Goede 2490ba002bcSHans de Goede gdev->input = input; 2500ba002bcSHans de Goede 2510ba002bcSHans de Goede return input_register_device(gdev->input); 2520ba002bcSHans de Goede } 2530ba002bcSHans de Goede 2540ba002bcSHans de Goede static ssize_t host_version_show(struct device *dev, 2550ba002bcSHans de Goede struct device_attribute *attr, char *buf) 2560ba002bcSHans de Goede { 2570ba002bcSHans de Goede struct vbg_dev *gdev = dev_get_drvdata(dev); 2580ba002bcSHans de Goede 2590ba002bcSHans de Goede return sprintf(buf, "%s\n", gdev->host_version); 2600ba002bcSHans de Goede } 2610ba002bcSHans de Goede 2620ba002bcSHans de Goede static ssize_t host_features_show(struct device *dev, 2630ba002bcSHans de Goede struct device_attribute *attr, char *buf) 2640ba002bcSHans de Goede { 2650ba002bcSHans de Goede struct vbg_dev *gdev = dev_get_drvdata(dev); 2660ba002bcSHans de Goede 2670ba002bcSHans de Goede return sprintf(buf, "%#x\n", gdev->host_features); 2680ba002bcSHans de Goede } 2690ba002bcSHans de Goede 2700ba002bcSHans de Goede static DEVICE_ATTR_RO(host_version); 2710ba002bcSHans de Goede static DEVICE_ATTR_RO(host_features); 2720ba002bcSHans de Goede 2730ba002bcSHans de Goede /** 2740ba002bcSHans de Goede * Does the PCI detection and init of the device. 2750ba002bcSHans de Goede * 2760ba002bcSHans de Goede * Return: 0 on success, negated errno on failure. 2770ba002bcSHans de Goede */ 2780ba002bcSHans de Goede static int vbg_pci_probe(struct pci_dev *pci, const struct pci_device_id *id) 2790ba002bcSHans de Goede { 2800ba002bcSHans de Goede struct device *dev = &pci->dev; 2810ba002bcSHans de Goede resource_size_t io, io_len, mmio, mmio_len; 2820ba002bcSHans de Goede struct vmmdev_memory *vmmdev; 2830ba002bcSHans de Goede struct vbg_dev *gdev; 2840ba002bcSHans de Goede int ret; 2850ba002bcSHans de Goede 2860ba002bcSHans de Goede gdev = devm_kzalloc(dev, sizeof(*gdev), GFP_KERNEL); 2870ba002bcSHans de Goede if (!gdev) 2880ba002bcSHans de Goede return -ENOMEM; 2890ba002bcSHans de Goede 2900ba002bcSHans de Goede ret = pci_enable_device(pci); 2910ba002bcSHans de Goede if (ret != 0) { 2920ba002bcSHans de Goede vbg_err("vboxguest: Error enabling device: %d\n", ret); 2930ba002bcSHans de Goede return ret; 2940ba002bcSHans de Goede } 2950ba002bcSHans de Goede 2960ba002bcSHans de Goede ret = -ENODEV; 2970ba002bcSHans de Goede 2980ba002bcSHans de Goede io = pci_resource_start(pci, 0); 2990ba002bcSHans de Goede io_len = pci_resource_len(pci, 0); 3000ba002bcSHans de Goede if (!io || !io_len) { 3010ba002bcSHans de Goede vbg_err("vboxguest: Error IO-port resource (0) is missing\n"); 3020ba002bcSHans de Goede goto err_disable_pcidev; 3030ba002bcSHans de Goede } 3040ba002bcSHans de Goede if (devm_request_region(dev, io, io_len, DEVICE_NAME) == NULL) { 3050ba002bcSHans de Goede vbg_err("vboxguest: Error could not claim IO resource\n"); 3060ba002bcSHans de Goede ret = -EBUSY; 3070ba002bcSHans de Goede goto err_disable_pcidev; 3080ba002bcSHans de Goede } 3090ba002bcSHans de Goede 3100ba002bcSHans de Goede mmio = pci_resource_start(pci, 1); 3110ba002bcSHans de Goede mmio_len = pci_resource_len(pci, 1); 3120ba002bcSHans de Goede if (!mmio || !mmio_len) { 3130ba002bcSHans de Goede vbg_err("vboxguest: Error MMIO resource (1) is missing\n"); 3140ba002bcSHans de Goede goto err_disable_pcidev; 3150ba002bcSHans de Goede } 3160ba002bcSHans de Goede 3170ba002bcSHans de Goede if (devm_request_mem_region(dev, mmio, mmio_len, DEVICE_NAME) == NULL) { 3180ba002bcSHans de Goede vbg_err("vboxguest: Error could not claim MMIO resource\n"); 3190ba002bcSHans de Goede ret = -EBUSY; 3200ba002bcSHans de Goede goto err_disable_pcidev; 3210ba002bcSHans de Goede } 3220ba002bcSHans de Goede 3230ba002bcSHans de Goede vmmdev = devm_ioremap(dev, mmio, mmio_len); 3240ba002bcSHans de Goede if (!vmmdev) { 3250b598e4fSArnd Bergmann vbg_err("vboxguest: Error ioremap failed; MMIO addr=%pap size=%pap\n", 3260b598e4fSArnd Bergmann &mmio, &mmio_len); 3270ba002bcSHans de Goede goto err_disable_pcidev; 3280ba002bcSHans de Goede } 3290ba002bcSHans de Goede 3300ba002bcSHans de Goede /* Validate MMIO region version and size. */ 3310ba002bcSHans de Goede if (vmmdev->version != VMMDEV_MEMORY_VERSION || 3320ba002bcSHans de Goede vmmdev->size < 32 || vmmdev->size > mmio_len) { 3330ba002bcSHans de Goede vbg_err("vboxguest: Bogus VMMDev memory; version=%08x (expected %08x) size=%d (expected <= %d)\n", 3340ba002bcSHans de Goede vmmdev->version, VMMDEV_MEMORY_VERSION, 3350ba002bcSHans de Goede vmmdev->size, (int)mmio_len); 3360ba002bcSHans de Goede goto err_disable_pcidev; 3370ba002bcSHans de Goede } 3380ba002bcSHans de Goede 3390ba002bcSHans de Goede gdev->io_port = io; 3400ba002bcSHans de Goede gdev->mmio = vmmdev; 3410ba002bcSHans de Goede gdev->dev = dev; 3420ba002bcSHans de Goede gdev->misc_device.minor = MISC_DYNAMIC_MINOR; 3430ba002bcSHans de Goede gdev->misc_device.name = DEVICE_NAME; 3440ba002bcSHans de Goede gdev->misc_device.fops = &vbg_misc_device_fops; 3450ba002bcSHans de Goede gdev->misc_device_user.minor = MISC_DYNAMIC_MINOR; 3460ba002bcSHans de Goede gdev->misc_device_user.name = DEVICE_NAME_USER; 3470ba002bcSHans de Goede gdev->misc_device_user.fops = &vbg_misc_device_user_fops; 3480ba002bcSHans de Goede 3490ba002bcSHans de Goede ret = vbg_core_init(gdev, VMMDEV_EVENT_MOUSE_POSITION_CHANGED); 3500ba002bcSHans de Goede if (ret) 3510ba002bcSHans de Goede goto err_disable_pcidev; 3520ba002bcSHans de Goede 3530ba002bcSHans de Goede ret = vbg_create_input_device(gdev); 3540ba002bcSHans de Goede if (ret) { 3550ba002bcSHans de Goede vbg_err("vboxguest: Error creating input device: %d\n", ret); 3560ba002bcSHans de Goede goto err_vbg_core_exit; 3570ba002bcSHans de Goede } 3580ba002bcSHans de Goede 3590ba002bcSHans de Goede ret = devm_request_irq(dev, pci->irq, vbg_core_isr, IRQF_SHARED, 3600ba002bcSHans de Goede DEVICE_NAME, gdev); 3610ba002bcSHans de Goede if (ret) { 3620ba002bcSHans de Goede vbg_err("vboxguest: Error requesting irq: %d\n", ret); 3630ba002bcSHans de Goede goto err_vbg_core_exit; 3640ba002bcSHans de Goede } 3650ba002bcSHans de Goede 3660ba002bcSHans de Goede ret = misc_register(&gdev->misc_device); 3670ba002bcSHans de Goede if (ret) { 3680ba002bcSHans de Goede vbg_err("vboxguest: Error misc_register %s failed: %d\n", 3690ba002bcSHans de Goede DEVICE_NAME, ret); 3700ba002bcSHans de Goede goto err_vbg_core_exit; 3710ba002bcSHans de Goede } 3720ba002bcSHans de Goede 3730ba002bcSHans de Goede ret = misc_register(&gdev->misc_device_user); 3740ba002bcSHans de Goede if (ret) { 3750ba002bcSHans de Goede vbg_err("vboxguest: Error misc_register %s failed: %d\n", 3760ba002bcSHans de Goede DEVICE_NAME_USER, ret); 3770ba002bcSHans de Goede goto err_unregister_misc_device; 3780ba002bcSHans de Goede } 3790ba002bcSHans de Goede 3800ba002bcSHans de Goede mutex_lock(&vbg_gdev_mutex); 3810ba002bcSHans de Goede if (!vbg_gdev) 3820ba002bcSHans de Goede vbg_gdev = gdev; 3830ba002bcSHans de Goede else 3840ba002bcSHans de Goede ret = -EBUSY; 3850ba002bcSHans de Goede mutex_unlock(&vbg_gdev_mutex); 3860ba002bcSHans de Goede 3870ba002bcSHans de Goede if (ret) { 3880ba002bcSHans de Goede vbg_err("vboxguest: Error more then 1 vbox guest pci device\n"); 3890ba002bcSHans de Goede goto err_unregister_misc_device_user; 3900ba002bcSHans de Goede } 3910ba002bcSHans de Goede 3920ba002bcSHans de Goede pci_set_drvdata(pci, gdev); 3930ba002bcSHans de Goede device_create_file(dev, &dev_attr_host_version); 3940ba002bcSHans de Goede device_create_file(dev, &dev_attr_host_features); 3950ba002bcSHans de Goede 3960b598e4fSArnd Bergmann vbg_info("vboxguest: misc device minor %d, IRQ %d, I/O port %x, MMIO at %pap (size %pap)\n", 3970ba002bcSHans de Goede gdev->misc_device.minor, pci->irq, gdev->io_port, 3980b598e4fSArnd Bergmann &mmio, &mmio_len); 3990ba002bcSHans de Goede 4000ba002bcSHans de Goede return 0; 4010ba002bcSHans de Goede 4020ba002bcSHans de Goede err_unregister_misc_device_user: 4030ba002bcSHans de Goede misc_deregister(&gdev->misc_device_user); 4040ba002bcSHans de Goede err_unregister_misc_device: 4050ba002bcSHans de Goede misc_deregister(&gdev->misc_device); 4060ba002bcSHans de Goede err_vbg_core_exit: 4070ba002bcSHans de Goede vbg_core_exit(gdev); 4080ba002bcSHans de Goede err_disable_pcidev: 4090ba002bcSHans de Goede pci_disable_device(pci); 4100ba002bcSHans de Goede 4110ba002bcSHans de Goede return ret; 4120ba002bcSHans de Goede } 4130ba002bcSHans de Goede 4140ba002bcSHans de Goede static void vbg_pci_remove(struct pci_dev *pci) 4150ba002bcSHans de Goede { 4160ba002bcSHans de Goede struct vbg_dev *gdev = pci_get_drvdata(pci); 4170ba002bcSHans de Goede 4180ba002bcSHans de Goede mutex_lock(&vbg_gdev_mutex); 4190ba002bcSHans de Goede vbg_gdev = NULL; 4200ba002bcSHans de Goede mutex_unlock(&vbg_gdev_mutex); 4210ba002bcSHans de Goede 4220ba002bcSHans de Goede device_remove_file(gdev->dev, &dev_attr_host_features); 4230ba002bcSHans de Goede device_remove_file(gdev->dev, &dev_attr_host_version); 4240ba002bcSHans de Goede misc_deregister(&gdev->misc_device_user); 4250ba002bcSHans de Goede misc_deregister(&gdev->misc_device); 4260ba002bcSHans de Goede vbg_core_exit(gdev); 4270ba002bcSHans de Goede pci_disable_device(pci); 4280ba002bcSHans de Goede } 4290ba002bcSHans de Goede 4300ba002bcSHans de Goede struct vbg_dev *vbg_get_gdev(void) 4310ba002bcSHans de Goede { 4320ba002bcSHans de Goede mutex_lock(&vbg_gdev_mutex); 4330ba002bcSHans de Goede 4340ba002bcSHans de Goede /* 4350ba002bcSHans de Goede * Note on success we keep the mutex locked until vbg_put_gdev(), 4360ba002bcSHans de Goede * this stops vbg_pci_remove from removing the device from underneath 4370ba002bcSHans de Goede * vboxsf. vboxsf will only hold a reference for a short while. 4380ba002bcSHans de Goede */ 4390ba002bcSHans de Goede if (vbg_gdev) 4400ba002bcSHans de Goede return vbg_gdev; 4410ba002bcSHans de Goede 4420ba002bcSHans de Goede mutex_unlock(&vbg_gdev_mutex); 4430ba002bcSHans de Goede return ERR_PTR(-ENODEV); 4440ba002bcSHans de Goede } 4450ba002bcSHans de Goede EXPORT_SYMBOL(vbg_get_gdev); 4460ba002bcSHans de Goede 4470ba002bcSHans de Goede void vbg_put_gdev(struct vbg_dev *gdev) 4480ba002bcSHans de Goede { 4490ba002bcSHans de Goede WARN_ON(gdev != vbg_gdev); 4500ba002bcSHans de Goede mutex_unlock(&vbg_gdev_mutex); 4510ba002bcSHans de Goede } 4520ba002bcSHans de Goede EXPORT_SYMBOL(vbg_put_gdev); 4530ba002bcSHans de Goede 4540ba002bcSHans de Goede /** 4550ba002bcSHans de Goede * Callback for mouse events. 4560ba002bcSHans de Goede * 4570ba002bcSHans de Goede * This is called at the end of the ISR, after leaving the event spinlock, if 4580ba002bcSHans de Goede * VMMDEV_EVENT_MOUSE_POSITION_CHANGED was raised by the host. 4590ba002bcSHans de Goede * 4600ba002bcSHans de Goede * @gdev: The device extension. 4610ba002bcSHans de Goede */ 4620ba002bcSHans de Goede void vbg_linux_mouse_event(struct vbg_dev *gdev) 4630ba002bcSHans de Goede { 4640ba002bcSHans de Goede int rc; 4650ba002bcSHans de Goede 4660ba002bcSHans de Goede /* Report events to the kernel input device */ 4670ba002bcSHans de Goede gdev->mouse_status_req->mouse_features = 0; 4680ba002bcSHans de Goede gdev->mouse_status_req->pointer_pos_x = 0; 4690ba002bcSHans de Goede gdev->mouse_status_req->pointer_pos_y = 0; 4700ba002bcSHans de Goede rc = vbg_req_perform(gdev, gdev->mouse_status_req); 4710ba002bcSHans de Goede if (rc >= 0) { 4720ba002bcSHans de Goede input_report_abs(gdev->input, ABS_X, 4730ba002bcSHans de Goede gdev->mouse_status_req->pointer_pos_x); 4740ba002bcSHans de Goede input_report_abs(gdev->input, ABS_Y, 4750ba002bcSHans de Goede gdev->mouse_status_req->pointer_pos_y); 4760ba002bcSHans de Goede input_sync(gdev->input); 4770ba002bcSHans de Goede } 4780ba002bcSHans de Goede } 4790ba002bcSHans de Goede 4800ba002bcSHans de Goede static const struct pci_device_id vbg_pci_ids[] = { 4810ba002bcSHans de Goede { .vendor = VBOX_VENDORID, .device = VMMDEV_DEVICEID }, 4820ba002bcSHans de Goede {} 4830ba002bcSHans de Goede }; 4840ba002bcSHans de Goede MODULE_DEVICE_TABLE(pci, vbg_pci_ids); 4850ba002bcSHans de Goede 4860ba002bcSHans de Goede static struct pci_driver vbg_pci_driver = { 4870ba002bcSHans de Goede .name = DEVICE_NAME, 4880ba002bcSHans de Goede .id_table = vbg_pci_ids, 4890ba002bcSHans de Goede .probe = vbg_pci_probe, 4900ba002bcSHans de Goede .remove = vbg_pci_remove, 4910ba002bcSHans de Goede }; 4920ba002bcSHans de Goede 4930ba002bcSHans de Goede module_pci_driver(vbg_pci_driver); 4940ba002bcSHans de Goede 4950ba002bcSHans de Goede MODULE_AUTHOR("Oracle Corporation"); 4960ba002bcSHans de Goede MODULE_DESCRIPTION("Oracle VM VirtualBox Guest Additions for Linux Module"); 4970ba002bcSHans de Goede MODULE_LICENSE("GPL"); 498